scholarly journals APPLICATION EXPERIENCE OF COMPUTER SIMULATION SYSTEMS TO INCREASE THE EFFICIENCY OF FOUNDRY PRODUCTION AT THE ROSTOV FOUNDRY

2018 ◽  
pp. 72-76
Author(s):  
A. V. Fedosov ◽  
G. V. Chumachenko
Keyword(s):  
Computer Simulation ◽  
Systematic Approach ◽  
Practical Application ◽  
Simulation Tools ◽  
Shrinkage Defects ◽  
Gate System ◽  
System Equations ◽  
Simulation Results ◽  
Definition Of ◽  
Simulation Systems

The stages of introduction of computer simulation tools in the production process of The Rostov Foundry are considered. A system for estimating the results of simulation is proposed, which includes the definition of complex parameters that allow an assessment of the causes and the probability of formation of shrinkage defects. An equation that determines a relationship between results of simulation and actual rejects in production is proposed. The feeder operation index is suggested to use for estimation of the reasons for the formation of shrinkage defects. The yield index is suggested to evaluate the possibility of reducing the weight of gate system. Equations for calculating of these indices are developed. A systematic approach is presented for the application of simulation results, which provides for the organization of a database of the technologies being studied. The development of this base allows not only to accumulate the experience, but also to apply it to minimize errors and save time in the process of introducing new castings. The results of practical application of the developed system for 10 positions are presented, which allowed to increase the yield by 6.9% and to reduce the total defects rate by 5.1%.

A Fast Direction Finding Algorithm Based on Correlation Processing

2013 ◽  
Vol 373-375 ◽  
pp. 880-883 ◽  
Author(s):  
Dong Liang Guo ◽  
Zhong Hua Li
Keyword(s):  
Computer Simulation ◽  
Computational Complexity ◽  
Correlation Coefficients ◽  
Computation Time ◽  
Direction Finding ◽  
Practical Application ◽  
Maximal Correlation ◽  
Correlation Processing ◽  
Simulation Results ◽  
Angle Interval

To reduce the computational complexity of direction finding algorithms based on correlation processing, a fast algorithm is presented in this paper. Unlike the conventional direction finding algorithms which calculates the correlation coefficients in the whole azimuth range, the improved algorithm measure the direction of arrival (DOA) roughly first, then, measure the DOA only in finite angle interval and searches the maximal correlation coefficient, thus shorten the execution time greatly. In addition, the algorithm has no influence on the accuracy of direction finding. The best proportion between samples for rough measurement and samples for fine measurement is analyzed. Computer simulation results confirm that the proposed method can shorten the computation time greatly, and the proposed algorithm has practical application value in the instantaneous direction finding.

scholarly journals USE OF SIMULATION SIMULATION TO SOLVE THE PROBLEMS OF REENGINEERING BUSINESS PROCESSES IN ANYLOGIC SIMULATION ENVIRONMENT

2021 ◽  
Vol 8 (1) ◽  
pp. 067-075
Author(s):  
Y. Y. Fyalkovskiy ◽  
Keyword(s):  
Computer Simulation ◽  
Business Processes ◽  
Enterprise Management ◽  
Simulation Environment ◽  
Use Of Resources ◽  
Building Models ◽  
Simulation Results ◽  
The Cost ◽  
Simulation Systems ◽  
Models And Modeling

Successful enterprise management in modern conditions requires the optimization of its business processes. This problem can be solved using simulation, which involves the construction of models that describe the processes as they would in reality. Based on the simulation results, decisions are made to improve the technology and methodology for performing business processes, rational use of resources, reduce the cost of business processes, etc. The paper considers the practical aspects of building models and modeling using one of the popular computer simulation systems Anylogic.

scholarly journals Computer simulations as interactive method training In the course of preparation bachelors of law

2017 ◽  
Vol 5 (2) ◽  
pp. 105-117
Author(s):  
Иван Иванов ◽  
Ivan Ivanov ◽  
Алексей Кусков ◽  
Aleksey Kuskov
Keyword(s):  
Computer Simulation ◽  
Computer Simulations ◽  
Research Methodology ◽  
Systematic Approach ◽  
Scheduling Algorithm ◽  
Interactive Methods ◽  
Theoretical Knowledge ◽  
Logical Method ◽  
Definition Of ◽  
Effective Use

The aim of the article is to examine the computer simulations as one of the interactive methods of training and formulate proposals for their effective use in training bachelors of law. The authors have chosen the basis of the research methodology a systematic approach using formal-logical method as well as methods of theoretical knowledge and empirical research. As a result, the authors formulated the definition of legal computer simulation, classified these simulations. The authors proposed a scheduling algorithm and conduct classes with the use of computer simulations. There are conclusions about the problems and the subsequent directions of development of computer simulation for a more effective legal system for training of bachelors, which should be according to the authors field of application of the results.

scholarly journals DEFINITION OF THE SHAFTS RADIAL BEATING CAPACITIVE SENSOR RESPONSE FUNCTION BY COMPUTER MODELING

2021 ◽  
Vol 2021 (58) ◽  
pp. 107-112
Author(s):  
V.O. Bereznychenko ◽  
Keyword(s):  
Computer Modeling ◽  
Response Function ◽  
Capacitive Sensor ◽  
Sensor Response ◽  
Metrological Characteristics ◽  
Element Analysis ◽  
Modeling Tools ◽  
Simulation Tools ◽  
Simulation Results ◽  
Definition Of

The paper presents the results study the characteristics of capacitive beating sensors to optimize them by computer simulation tools using. A concentric capacitive sensor with high-potential and grounded electrodes was studied. In the course of the research, the expediency of using computer modeling tools by finite element analysis methods to study the metrological characteristics of sensors was shown. It is shown that the application of modeling makes it possible to reduce the time spent on studies of the transformation function and metrological characteristics. The picture of the distribution of equipotential lines of an electric field in a working backlash of the sensor has resulted. The simulation results make it possible to create a picture of equipotential lines by changing the distance between the total surface of the sensor electrodes and the grounded surface, simulating the surface of the shaft. The results of the definition of the response function are given. References 23, figures 5.

SIMULATION OF SOFT START OF SYNCHRONOUS ELECTRIC DRIVES

2019 ◽  
Author(s):  
Shakhboz Dadabaev
Keyword(s):  
Computer Simulation ◽  
Electric Drive ◽  
Water Supply Systems ◽  
Factors Affecting ◽  
Electric Drives ◽  
Soft Start ◽  
Simulation Results ◽  
Pumping Units ◽  
Negative Factors ◽  
Supply Systems

The main negative factors affecting the starting modes of synchronous electric drives of pumping units of irrigation water supply systems were identified, computer simulation of direct and soft start of synchronous electric drive was made, the simulation results are shown in graphs and a brief conclusion was made on the study.

Computer simulation to evaluate the economics of landfill gas recovery

1998 ◽  
Vol 38 (2) ◽  
pp. 201-208
Author(s):  
M. W. Milke
Keyword(s):  
Computer Simulation ◽  
Computer Program ◽  
Landfill Gas ◽  
Base Case ◽  
Simulation Tool ◽  
Hypothetical Case ◽  
Gas Recovery ◽  
Fixed Set ◽  
Key Variables ◽  
Simulation Results

A need exists for tools to improve evaluations of the economics of landfill gas recovery. A computer simulation tool is presented. It uses a spreadsheet computer program to calculate the economics for a fixed set of inputs, and a simulation program to consider variations in the inputs. The method calculates the methane generated each year, and estimates the costs and incomes associated with the recovery and sale of the gas. Base case results are presented for a city of 500,000. An uncertainty analysis for a hypothetical case is presented. The simulation results can help an analyst see the key variables affecting the economics of a project.

The Development of Forgiveness

2020 ◽  
pp. 401-418
Author(s):  
Robert D. Enright ◽  
Jacqueline Y. Song
Keyword(s):  
Necessary Conditions ◽  
Practical Application ◽  
Important Work ◽  
Future Directions ◽  
Developmental Progression ◽  
Forgiveness Education ◽  
Cognitive Work ◽  
Adolescents And Adults ◽  
Forgiveness Therapy ◽  
Definition Of

The psychology of forgiveness originated from the creative and important work on the development of justice initiated by Piaget in 1932 and extended by Kohlberg in 1969. The scientific study of forgiveness is quite new, having emerged in print in 1989, with an examination of the developmental progression in children’s, adolescents’, and adults’ thinking about the necessary conditions for them to offer forgiveness to another person. In this chapter, the authors first review the definition of forgiveness, followed by this early cognitive work. They then turn to a discussion of the measurement of forgiveness correlates of forgiveness. The practical application of this construct is seen in the development of forgiveness therapy and forgiveness education, which the authors discuss in light of the empirical findings. Future directions for forgiveness studies are considered.

scholarly journals FEM Simulations for the Optimization of the Inlet Gate System in Rapid Investment Casting Process for the Realization of Heat Exchangers

2021 ◽  
Author(s):  
D. Almonti ◽  
G. Baiocco ◽  
E. Mingione ◽  
N. Ucciardello
Keyword(s):  
Investment Casting ◽  
Heat Exchangers ◽  
Complex Geometry ◽  
Heat Pipes ◽  
Casting Process ◽  
Added Value ◽  
Cad Models ◽  
Gate System ◽  
Definition Of ◽  
Metallic Parts

AbstractOver the last decades, additive manufacturing (AM) has become the principal production technology for prototypes and components with high added value. In the production of metallic parts, AM allows producing complex geometry with a single process. Also, AM admits a joining of elements that could not be realized with traditional methods. In addition, AM allows the manufacturing of components that could not be realized using other types of processes like reticular structures in heat exchangers. A solid mold investment casting that uses printed patterns overcomes typical limitations of additive processes such as expensive machinery and challenging process parameter settings. Indeed, rapid investment casting provides for a foundry epoxy pattern reproducing the component to exploit in the lost wax casting process. In this paper, aluminium radiators with flat heat pipes seamlessly connected with a cellular structure were conceived and produced. This paper aims at defining and investigating the principal foundry parameters to achieve a defect-free heat exchanger. For this purpose, different device CAD models were designed, considering four pipes’ thickness and length. Finite element method numerical simulations were performed to optimize the design of the casting process. Three different gate configurations were investigated for each length. The numerical investigations led to the definition of a castability range depending on flat heat pipes geometry and casting parameters. The optimal gate configuration was applied in the realization of AM patterns and casting processes

The Application of Bayesian Statistics in Calculating Project Buffer

2011 ◽  
Vol 58-60 ◽  
pp. 1018-1024
Author(s):  
Feng Ye ◽  
Gui Chen Xu ◽  
Di Kang Zhu
Keyword(s):  
Bayesian Statistics ◽  
Statistical Approach ◽  
Implementation Process ◽  
Current Method ◽  
Practical Application ◽  
Great Flexibility ◽  
Crystal Ball ◽  
Simulation Results ◽  
The Stability

This paper reviews several current methods of calculating buffer on the basis of pointing out each merits and pitfalls and then introduces Bayesian statistical approach to CCS / BM domain to calculate the size of the project buffer, to overcome that the current method of the buffer calculation is too subjective and the defect on lacking of practical application. In Crystal Ball, we compare the simulation results of implementation process on the benchmark of C&PM, RESM and SM. The results show that the buffer using this method can ensure the stability of the project’s completion probability, and this method has great flexibility.

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